Electrically driven control device for a camera

ABSTRACT

A wind up electric motor which performs film wind up and shutter charging, etc. and a release electric motor which performs shutter release are connected to a power source through a change over switch, and an electromagnetic relay which is activated by a release button is made ON and OFF, to change over said change over switch in its connection, thereby the above mentioned windup electric motor and the release electric motor are driven alternately.

United States Patent n91 Ogiso et all [451 Aug. 5, 1975 1 ELECTRICALLYDRIVEN CONTROL DEVICE FOR A CAMERA [75] lnventors: Mltsutoshl Ogiso,Kawasaki; I-llroshi Aizawa, Tokyo; Susumu Kozuki, Kawasaki, all of Japan[73] Assignee: Canon Kabushlkl Kaisha, Tokyo,

Japan [22] Filed: Aug. 14, 1975 [21] Appl. No.: 388,270

[30] Foreign Application Priority Data Aug. 16, 1972 Japan 47-82000 Aug.26, 1972 Japan 47-85589 Sept. 13,1972 Japan 47-91970 Aug. 30. 1972 Japan47-100271 [52] US. Cl. 354/173; 354/204; 354/212; 354/266; 242/7l.5;352/121 [51] Int. Cl. G03b 19/04 [5 8] Field of Search 354/204, 205,212, 213,

[56] References Cited UNITED STATES PATENTS 3,656,420 4/1972 AlZilWtl GI'oII. 354/173 Primary Examiner-Robert P. Greiner Attorney, Agent, orFirm-Torcn, McGeady and Stanger [57] ABSTRACT A wind up electric motorwhich performs film wind up and shutter charging, etc. and a releaseelectric motor which performs shutter release are connected to a powersource through a change over switch, and an electromagnetic relay whichis activated by a release button is made ON and OFF, to change over saidchange over switch in its connection, thereby the above mentionedwind-up electric motor and the release electric motor are drivenalternately.

13 Claims, 14 Drawing Figures PATENTEU RUB 51975 SHEET PATENTEU AUG51975 WW I PATENTED AUG 51975 SHEET mm mm Qmm m m \IN WA m mom V m 8m mx 5 F a A G R C Qwm mm o nmm mm 65 ELECTRICALLY DRIVEN CONTROL DEVICEFOR A CAMERA BACKGROUND OF INVENTION:

1. Field of the Invention The present invention relates to an electricdriving device for a camera in which film wind up, shutter charging andshutter release are done by electric motors.

2. Description of the Prior Art Heretofore as an electric driving devicefor a camera, there hasbeen one which conducts wind up and shutterrelease with one motor and one which conducts the same with separatemotors. In the former type in which said action is done by one motor, arelay contact of an electro-magnetic relay which is activated byoperation of a shutter button is used as a change over switch foralternately activating the wind up and the shutter release. Therefore asan electromagnetic relay is used in this type in which one motor isused, restrictions in designing arrangement of such related equipment asa remote control device and plural number of synchronized photographingdevices can be remarkably reduced, but since the wind-up and the shutterrelease are done by one motor, a spring must have energy accumulatedtherein during film wind-up operation by the motor so that the shutterrelease is done by releasing said accumulated energy. Therefore it isunavoidable that the shutter release action becomes impact-giving, thushaving such shortcomings as giving bad effect on the durability of theshutter of a camera or causing blurring of a camera. In the latter typein which the wind-up and the shutter release are done by separatemotors, a manually operated switch is used as a change over switch foralternately activating the wind-up and the shutter release. Therefore,as the shutter release and the windup are done by separate motors, theabove mentioned shock at the time of shutter release can be avoided, butit has such shortcomings that there is restrictions in designing thearrangement of such related equipment as a remote control device andplural number of synchronized photographing devices, etc. since amanually operated switch is used to have the wind-up and shutter releasedone alternately.

First object of the present invention is to eliminate the abovementioned shortcomings, and is to perform the shutter release and thewind-up by separate motors and at the same time a relay contact of anelectromagnetic relay which is functioned by the operation of a releasebutton is used as a switch to conduct alternately the windup functionand the shutter release function.

Second object of the present invention is to provide a switch betweenthe wind-up motor and a power source to perform change over of a singleframe photo graphing and a continuous photographing.

Third object of the present invention is to have the photographingnumber of frames changed consecutively every second in association withthe operation of the release button.

Fourth object of the present invention is to conduct next wind up asshutter running is completed so that appropriate exposure can always beobtained.

Fifth object of the present invention is to have such series ofoperations as wind-up starting wind-up completion release startingrelease completion wind-up starting performed stepwise so that themechanism functions in a stable manner and is made in compact size.

Sixth object of the present invention will become apparent from theconcrete examples of the present invention which will be explained belowin details.

BRIEF DESCRIPTION OF THE DRAWINGS:

FIG. 1 is a circuit diagram to show a basic arrangement of the electricdriving device for a camera according to the present invention.

FIG. 2 is an arrangement drawing to show a release part of FIG. 1.

FIG. 3 is a circuit diagram made by modifying a portion of the circuitdiagram of FIG. 1.

FIG. 4 is a circuit diagram to show FIG. 3 in concrete manner.

FIG. 5 is a circuit diagram in such state that the circuit shown in FIG.1 is applied for a device to change number of frames to be photographed.

FIG. 6 is an arrangement drawing to show a release part used in FIG. 5.

FIG. 7 is a circuit diagram to show another example of the circuit shownin FIG. 5.

FIG. 8 is a circuit diagram in such state that the circuit shown in FIG.1 is applied to a proper exposure setting device.

FIG. 9 is a circuit diagram of a device to perform a series of functionfrom wind-up to release in stepwise manner, to which the circuit of FIG.1 is applied.

FIG. 10 is a front elevation of a film wind-up mechanism of the deviceshown in FIG. 9.

FIG. 11 is a cross-sectional view taken along the line II II in FIG. 10.

FIG. 12 is an oblique view ofa shutter release mechanism of the deviceshown in FIG. 9.

FIG. 13 (A)(B) are schematic drawings for the function of the mechanismshown in FIG. 12.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Now, an example of the presentinvention will be explained referring to the drawings. FIG. 1 is to showa basic circuit arrangement in the present invention, wherein E is apower source battery and an electromagnetic relay R and a switch S,which is linked with operation of a release button are connected inseries to the both ends of said battery E. The plus electrode end of thebattery E is connected to a fixed contact a of a change over switch Swith a wind-up motor M, and a switch S, being intervened therebetween inseries. The plus electrode end of the battery E is also connected to afixed contact b of the change over switch S with a release motor M and aswitch S being intervened therebetween in series. The movable contactingpiece C of said change over switch is connected to the minus electrodeend of the battery E. The above mentioned windup motor M, performswinding up of film and charging of shutter. etc., while the releasemotor M conducts shutter release action. The above mentioned switches S,is linked with the switch S and the switches S, and S performalternatively ON-OFF functions by wind-up completion and releasecompletion to drive the windup motor and the release motor. The abovementioned change over switch S is to change over its movable contactingpiece C to the fixed contacts b or c depending on whether the abovementioned electro-magnetic relay R is excited or not excited. A switchS, which changes over a single frame photographing and a continuousphotographing is connected between the fixed contact a and the movablecontacting piece of the change over switch S FIG. 2 is to show a releasepart of the device shown in FIG. 1. In FIG. 2, P is a release button, P,and P are notched groove provided on the periphery of the release buttonP. C is a click stop member and S, and S,-, are switches shown in FIG. 1and become ON as the button P is pressed down.

Now the function of the device with the above mentioned arrangement willbe explained. First explanations will be made on a case when a singleframe photographing is done. The state shown in the drawing shows thestate of wind-up completion, that is the switch S, is OFF, the switch Sis ON, and the movable contacting piece 0 of the change over switch S ischanged over to the fixed contact a. In this state as the release buttonP is pressed down and the click C engages with the groove P,, the switchS is ON and the switch S is OFF. As the switch S becomes ON, theelectro-magnetic relay R is excited and the movable contacting piece 0of the change over switch S is changed over from the fixed contact a tob. By this the current from the battery E flows through a circuitconsisting of the plus electrode of the battery E release motor M switchS change over switch S minus electrode of the battery E, rotating therelease motor M to perform release action of a camera. When a releasecompletion state is reached a release completion detection mechanismwhich is not shown in the drawing is started. By this a linking switchis changed over, and the switch S, becomes ON, while the switch Sbecomes OFF, thus the rotation of the release motor M is stopped. Thenas the pressing down of the release button P is released theelectro-magnetic relay R has its exciting eliminated, the movablecontacting piece 0 of the change over switch 8,, is changed over fromthe fixed contact b to a. In this state the current from the battery Eflows through a circuit consisting of the plus electrode of the batteryE wind-up motor M, switch S, change over switch S minus electrode of thebattery E, rotating the wind-up motor M, to perform wind-up of film andcharging of shutter. And as the state of wind-up completion is reached,a wind-up detection mechanism which is not shown in the drawing isinitiated. By this, the linking switch is changed over and the switch S,becomes OFF while the switch S becomes ON. Therefore the wind-up motorM, has its rotation stopped. Since a single frame photographing is doneand the camera is retained in a wound up state by the above mentionedprocess, the above function can be repeated by operating the releasebutton P again.

Next, explanations will be made on a case when continuous photographingis done. As the release button P is so pressed down as having the clickC engage with the groove P both the switch S and switch S become ON. Bythis the electro-magnetic relay R is excited and the movable contactingpiece c of the change over switch S is changed over from the fixedcontact a to b and is retained there. But, as the switch S is ON, therelease motor M and the wind-up motor M, perform repeatedly the shutterrelease and wind-up alternately by ON-OFF action of the switches S, andS thus continuous photographing is done. When the pressing down of therelease button P is released the change over switch S is changed over tothe fixed contact a,

therefore the camera will be retained in a state wind-up is completed.

Next a modification of the circuit of FIG. 1 will be explained usingFIG. 3. Same parts as in FIG. 1 will be explained with sameidentification numbers or marks. S is a starting control circuitprovided at the circuit of the wind-up motor M,, and is to control thestarting of the wind-up motor M, in relation with shutter speed, furtherto detect completion of the action of shutter after completion ofrelease for starting the wind-up motor M,. B is a control circuitprovided in parallel with the release motor M and this control circuit Bis an electric control circuit to ensure the function of the releasemotor M J is a jack being connected in parallel with the switch S andthis jack is to have various accessories such as timer, etc. connected.

FIG. 4 is to show the circuit of FIG. 3 in a concrete manner. MD is amain body of a motor drive, and G is a power source unit. T is suchaccessary unit as timer unit or others, and is plugged in to the jack Jof the MD unit. The MD unit and the power source unit are connected byconnecting terminals 2, t,,. In the drawing the same parts as in FIG. 3are shown with same numbers or marks. A switch 8,, is a main switch, Sis a switch which becomes OFF as film has no balance. S is a switch toprevent the release motor M from being stopped in a middle of a courceof release, and S is a switch which becomes OFF only when a shutterscreen is running after release. J is a jack to have such part as forexample as servo-IZE-device connected. Transistor Tr,, resistances R,, Rand the above mentioned switch 5,, in a camera charging circuit composesa control circuit equivalent to the S in FIG. 3, while transistors TrTr,,, a diode D and a resistance R in a release circuit composes anelectric control circuit for the motor M and is equivalent to B in FIG.3. C, and D are noise elimination element of the motor.

While the function of said device is about same as that of the basiccircuit shown in FIG. 1, explanations will be made on the function ofthe control circuit S and the control circuit B. Now, such case is takenup that current flows through the release motor M and release action isdone and the shutter is started. At such time, the switch S becomes OFFand the transistor Tr, of the control circuit is in OFF state. Then, asthe release action is completed the linking switches S, and S arechanged over and the wind-up motor M, is connected to a power source,but since the switch S is OFF and the transistor Tr. is OFF while theshutter screen is running, current will not flow through the wind-upmotor M, and the wind-up action will not be started. Next as the shutterscreen completes running the switch S becomes ON and the transistor Tr,becomes ON, thus wind-up action is started. By this the wind-up actionwill be done surely after completion of closing of the shutter screen.

Next the transistors Tr,,, Tr of the control circuit are placed in OFFstate by the action of D, and R when the switch S is ON, but when S ischanged to OFF, both Tr Tr become ON, shortcircuiting between bothterminals of the release motor M thus control force is given to themotor M and the release action is surely performed. When, for example, atimer unit T is plugged in to the jack J, the switch S which is operatedby the release button is separated with the jack, and the timer unit Tis connected in series to the electromagnetic relay R, and theelectro-magnetic relay R will be controlled by the action of the timer,thus timer photographing can be done. Also, for example a remote controlunit, etc. is plugged in to J, the electromagnetic release device canbe'activated in same manner.

Now, explanations shall be made for a case when the basic circuit inFIG. 1 is applied to a photographing frame number changing device. Firstexplanationswill be made on a case when the change of photographingframe number is done by changing electric potential of a supply powersource referring to FIG. 5. In FIG. 5 same parts as in FIG. 1 are shownwith same numbers or marks, and A is a circuit to control the electricvoltage supplied to the wind-up motor M, and the release motor M VR is avariable'resistance foradjusting the control circuit A. FIG. 6 sho wsarelease part of this device, wherein P is a release button. As thisrelease button P is pressed down, a member 1 is rotated to clockwisedirection around a'center, fulcrum 3 against a spring 2, making theswitch S, ON and 'at the same time the variable resistance VR will becontinuously changed.

As the function of such photographing frame number changing device asmentioned above is basically similar to the example shown in FIGJI,detailed explanations of the same will be omitted. The control circuit Ais composed of well known transistor circuit, and by changing the inputvoltage thereto with the variable resistance VR, the voltage of themotor circuit to be supplied from the power source E through the controlcircuit A is changed. Therefore, when the variable resistance VR isvaried by the pressing down of the release button P with such releasedevice as shown in FIG. 6, the rotating speed of the motors M, and M isvaried in a continuous manner, thus the photographing frame number persecond can'be varied in a continuous manner. When the switch S is placedin ON state continuous photographing is done while one framephotographing is done'when the switch S is placed in-OFF state. I V

FIG. 7 shows a photographing frame number changing device as in FIG. 5and the photographing frame number per second is changed'in a continuousmanner by the release operation. In this example parts marked by brokenline replace the control circuit A in FIG; 5, and same parts as in FIG.5 are shown with same numbers or marks and concrete explanationsthereforwill be' omitted. T within the broken line shows a timercircuit, VR is a variable resistance having its resistance value changedwith release action, C is a condensor composing a time constant circuittogether with the variable resistance VR, and UJT is aunijunctiontransistor. Tr, 'is a switching transistor.

Next function of said device will be explained/The drawing shows thestate just after a camera is changed, and linking switches S,, S, areplaced' in OFF and ON state, respectively, by wind-up completion signal.

When a photographer presses down the release button P shown in FIG. 6the member 1 is rotated to clockwise direction around a center, fulcrum3 against the spring 2, placing S, in ON state, first. By this the timercircuit T is started and the electro-magnetic relay R is excited by suchtime constant'facto'r as determined by the variable resistance VR andthe condensor The change over switch S is changed over from a to b. Bythis the release motor M is started by a camera release circuit, that isE(+) M S S "'E(). The linking switches S,, S, are reversed by releasecompletion signal (signal detection part is not shown in the drawing),and the switch S, becomes ON while 8, becomes OFF, and the relay R hasits magnetism eliminated. placing the switch 5,, in ON to a side. Thenthe wind-up motor M, is started by a camera charging circuit, E(+ M, S,S E(-l Next, the linking switches S,, S, are reversed again by thewind-up completion signal, and S, is placed in OFF state, S, in ONstate. Then the relay R is excited again after such length of time asdetermined by time constant factor of the timer circuit T, and theswitch S is changed over from a to b thus the original state is resumed.

Since a series of operations such as camera charging, camera release,etc. are repeated with intervals of such time constant factor asdetermined by the variable resistance VR of the timer circuit T and thecondensor C, when the variable resistance VR is continuously changed bythe release button P, the photographing frame number per second can bechanged.

Next, FIG. 8 shows a case when the circuit of FIG. 1 is applied to aproper exposure setting device, wherein same parts as in FIG. lwill beexplained with same numbers and marks. In the drawing, EE is an exposurecontrol unit employing a servo-motor M and has such bridge circuitconnected to power source terminals t, as consisting of a photo-electricconversion element CdS and a group of variable resistors, R R R,, whichcorrespond to variation of ASA sensitivity, diaphragm value and shuttertime, etc., and the unit has a servo-motor M for driving lens diaphragmconnected to its output end through an amplification circuit E. Saidexposure volume determining circuit will not be limited to saidarrangement. MD is a motor drive unit and has a wind-up motor M, forfilm wind-up and shutter charging, a release motor M-, and is connectedto a power source E in parallel, having such arrangement that a switchS, and a switch S, are inserted in each motor circuit, respectively in amutually linked manner so that the switch S, is OFF and S is ON whenwind-up and charging by the motor M, are completed, while the switch S,is ON and S is OFF at the time when the release is completed by themotor M Since the mechanism to detect the completion of charging orcompletion of release to conduct change 0 .p-r of switches S,, S can beof publicly known means .21 mechanical or in electro-magnetic manner,thus it omitted from the drawing. S, is a switch which is czosed by thepressing down of the release button P to supply electricity to a relaycoil R and changes over the change over switch S between the circuit ofthe windup motor M, and the circuit of the release motor M from thefixed contact a to the fixed contact b.

A transistor TR is inserted in the circuit of the windup motor M,, andterminals t,,, t, are provided between the base thereof and a powersource E, then terminals t,,,, t,, containing resistors R R are providedat the base circuit, and are connected to the terminals t,, of the abovementioned exposure control unit EE.

C is a switching circuit at a camera and has a switch 5,; which becomesOFF while the shutter is running and terminals t,, t, which areconnected to the terminals t,,, of the motor drive unit MD. A member Mto drive said switch S is linked with such suitable mechanical member asmirror-up of a camera, stopping down of lens by a stop-down lever andothers and is so made as being closed at ordinary time and opened onlywhen the shutter is running.

The drawing shows the state of wind-up, wherein .S, is ON, S is OFF, 8,,NC, S,-, is ON, transistor TR is ON and the circuit E(+) M, TR S, (S,-,NC) E() is closed, then the motor M, performs film wind-up and shuttercharging. When said wind-up is completed, a detecting mechanism works toconvert the switch S, to OFF and S to ON, and the motor M is stopped.

When the release push button P is pressed the switch S, is closed andthe relay switch S is changed over to b and the release action isstarted by the motor M to make the shutter run. By release completionsignal S, is changed to ON and S to OFF, thus the motor M is stopped. Atthe same time as the shutter running is stopped the switch S is ON whileTR is ON and windup is started by the motor M,.

Since current is supplied from the power source to the exposure controlunit EE through the terminals t,,,, t,, which are in series with theterminals t,,, t, which control the wind-up motor M,, when the switch Sis off that is while shutter is in operation the servo motor M will notrotate, thus unit EE is retained at the state before the exposure actionis started thus proper exposure can be obtained.

FIG. 9 shows a case when the circuit of FIG. 1 is applied to a device inwhich a series of operations from wind-up to release are done stepwise,wherein same parts as in FIG. 1 are shown with same numbers or marks. Inthe circuit shown in FIG. 9, MD is a motor drive unit to Control awind-up mechanism and a release mechanism, G is a release unit havingchecker function for power source voltage, FC is a film chamber unit, CCis a connecting cord unit, EC is an extension unit, RC is a remoteswitch unit, TA is a timer unit, TB is a self timer unit, and TC is ashort timer unit.

FIG. 10 is to show a film wind-up mechanism having a device containingthe circuit of FIG. 9. M is a driving motor, 50 is a rotating axleconnected to a motor shaft through a compression spring 51 and auniversal coupling 52. G,-G, and G -G are a group of reduction gears,and 53 is an one way clutch placed between. the gear G and a filmwind-up axle 54.

The gear G and gear G are connected by a rotation absorbing mechanism.This rotation absorbing mechanism has such arrangement that long holes55 and pins 56 which are provided on opposing faces of the gears G G areengaged together and springs 57 are provided to push the pins 56 to oneend walls of the long holes 55.

G G are gears engaging with the gears G,, G, and axles G8,, G9, for saidgearsare coupled together with oblique planes, wherein the gear axle G9,moves up and down as an up and down member 1 by the difference inrotation of both axles, generating shutter release signal.

FIG. 12 shows a shutter release mechanism which functions receiving theshutter release signal generated at the film wind-up mechanism of FIG.9. In the drawing, 56 is a film counter axially supported on a shelfplate 80. 58 is a cam plate which is linked with gear to the filmcounter 56. 59 is a lever always pressure contacted to outer peripheryof the cam plate 58 by a spring 60, and drops into a concave part 58, ofthe cam plate 58 when remaining number of film becomes zero to place aswitch S in a circuit to supply current to the motor M, in OFF state. 61is a release lever which rotates around a center, an axle 62. 63 is alever linked to a release button of a camera. 64 is a rod to connect thelevers 61, 63. 65 is a lever to drive the film counter 56 in associationwith the lever 61. I

103 is a check leverrotated by an up and down member 101 and isrotatably provided at a base plate 66 with an axle 6, and is given arotating bias to clockwise direction by a returning spring 5. 7 is a pinto which the spring 5 is placed. 102 is an adjusting lever rotatablyprovided to the check lever 103 with an axle 8, and rotating bias isgiven to said lever by a spring 4 so that it always contacts the up anddown member 101 with a constant gap by a spacer 9.

10 is a control slider guided by pins l1, 12 provided on a base plate66, and biased to right hand direction by a spring 13. 14 is a .pin onwhich the spring 13 is placed. 15, 16 are pins provided on the controlslider 10. 17 is a switch operating lever driven by the pin and isrotatably provided on the baseplate 66 by an axle l8, and has a switchoperating pin 19 provided on its surface.

20 is a worm wheel driven by the shutter release motor M through a worm41, and is rotatably supported on the base plate 66 with an axle 21,further has on its surface a pin 22 and has at symmetrical position atl80 on its reverse face pins 23, 24. 25 is a release slider which isbiased by the pin 22 to make reciprocal movement and is guided by pins26, 27 on the base plate 66. A bent part 25 at end of the slider 25engages with the pin 16 on the control slider 10.

28 is a lever to control the switches S,,,,, S,,,,, by opening andclosing the same and has a switch operating pin 29, further is rotatablysupported at an axle 27 and is biased to rotate bya spring 30 to counterclockwise direction. 31 is a control lever rotatably provided with anaxle 32 to the base plate 66, and a roller 34 is provided at one end ofsaid lever by an axle 33, while a check lever 36 is rotatably attachedto the other end of the same by an axle 35. The roller 34 is placed atsuch position as engageable with the control slider 10, while an endpart 36a of the lever 36 is at such position as engageable with the pin22, and the other end part tion. 38 is a pin on which the spring 37 isplaced. 39 is a spring to give the lever 36 the rotating force toclockwise direction. 40 is a shutter release pin provided on the slider25.

Next, function of the device of the present invention will beexplainedhFlG. 12 and FIG. 13(A) show the state during the course offilm wind-up, wherein as the switches S,.,, S,,,,,, S, are ON thecircuit to supply current to the film wind-up driving motor M, becomesON and a circuit to supply current to' the shutter release driving motorM becomes OFF.

And as film wind-up completion state is reached, a torque sensor isactivated, that is, the up and down member 101 ascends, the lever 3 isrotated to counterclockwise direction through the lever 2. By this theengagement between the lever 3 and the control slider 10 is released,and the'control slider 10 moves to right direction in the drawing bytension of the biassing spring 13. By this the lever 17 which has beenrestricted by the pin 15 is rotated to counter-clockwise direction byrestoring force of the contact arm S, of the switch S,

(the restoring force of the contact arm S, is greater than that of thecontact arm S and the pin 19 changes over the switch S, to OFF, theswitch S to ON.

As the switch S, becomes OFF the circuit to supply current to the motorM becomes OFF and the film wind-up driving system is stopped. Then asthe switch S becomes ON the circuit to supply current to the motor Mwill be prepared. On the other hand as the slider 10 is shifted theroller 34 which is contacting with the stepped part 1011 of the same ismoved to a low stepped part 10b of the same by a spring 37 and thecontrol lever 31 is rotated to clockwise direction. At

this time the lever 36 also is rotated to clockwise direction and itsend part 36a is evacuated from the rotating zone of the pin 23, whilethe other end part 3611 is evacuated from the rotating zone of the checkclaw 42. By this the shutter release driving motor M has both mechanicalcheck and electrical check released thus functional preparation iscompleted.

Next, as an operator operates a push button (not shown in the drawing),a relay L functions and changes over the switch S to contact b. Then themotor M has voltage impressed to its current supply circuit and isstarted. The rotation of the motor M rotates the worm wheel 20 toclockwise direction through the worm 41 and moves the slider 25 to rightdirection by the engagement between the long hole part 25b and the pin22. By this movement the pin 40 on the slider 25 performs shutterrelease through the levers 61, 63. By rotation of the wheel 20 the lever28 has its restriction by the pin 24 released and is rotated tocounterclockwise direction by the tension of the biassing spring 30, andthe pin 29 closes the switches S,,,,, S (FIG. (B) Even if the operatoraccidentally leaves his hand off the release button returning the switchS to the contact a, such state as having voltage impressed will beretained as the switch 106 is ON.

The transposition of the slider 25 becomes the largest at a positionwhere the wheel 20 is rotated by 90 degree completing the shutterrelease action. And as the wheel 20 further continues rotation at theposition where it is rotated 180 the end part 25:: of the slider 25 willbecome engaged with the pin 16 on the slider 25. When the rotation ofthe wheel 20 further proceeds, the slider 25 is shifted to leftdirection and the slider 10 is shifted to left direction against thespring 13.

By this shifting the slider 10 engages again with the lever 3. At thistime the pin rotates the lever 17 to clockwise direction changing overthe switches S and S, to OFF and ON, respectively, again. As the switchS, becomes ON the circuit to supply current to the motor M, completesits preparation for supplying current.

On the other hand even if the switch S becomes OFF, as the switch S,,,,which is in parallel with the switch S is ON, the circuit to supplycurrent to the motor M is still retained in its voltage impressingstate. Also by the restoration of the slider 10 the lever 31 returns toits original position, therefore the end part 36a of the check lever 36on the lever 31 is shifted to the rotation zone of the pin 23 on thewheel 20. The wheel further continues rotation and restores the position(A) of FIG. 5, and the pin 24 rotates the lever 28 to clockwisedirection against the spring 30 before the completion of saidrestoration of the wheel 20. At this time finally the current supplycircuit for the motor M becomes OFF, and at the same time an electricbraking works by the driving control transistors TR,,, TR

Next as the pin 23 pushes the end part 36a of the check lever 36 torotate the same and the other end part 3612 is placed at the rotatingzone of the check claw 42, the check claw 42 and the end part 3612engage each other to place the motor M in a completely stopped state,thus completing one cycle of the shutter release driving system.

As the operator leaves his hand off the release button at this time, theswitch 8,, is changed over to the contact a and voltage is impressed tothe current supply circuit for the motor M,, returning'to the state tostart film wind-up.

While the above are explanations for one frame photographing, in case ofcontinuous photographing, by retaining the switch S in ON 'state as longas the operator keeps pushing the operating button voltage is impressedalternately to the current supply circuits for the motors M, or Mrepeating the cycles of film wind-up shutter release, then as theoperating button is released, at such time of cycle that it proceedsfrom the state in which film wind-up is completed to starting of themotor M the device is stopped at the state film wind-up is completed asthe switch S becomes OFF.

In the present invention, when rotating member at the film wind-upmechanism is stopped by wind-up completion, the rotation of the rotatingmember at the driving source is absorbed by a rotation absorbingmechanism, then an up and down member is activated utilizing thedifference in rotation of said both rotating members to generate shutterrelease signal, therefore shutter release becomes possible only aftercompletion of film wind-up, thus the invention is very effective insecuring stable operations, making the device compact and makingadjustment work easy.

What is claimed is:

1. An electrically driven control device for a camera comprising;

a power source,

an electro-magnetic relay connected to both terminals of said powersource,

a first switching means connected to said electromagnetic relay andcontrolled to ON or OFF by operating a release button,

a wind-up driving means connected between both terminals of the abovementioned power source to conduct film wind-up and shutter charging,

a release driving means connected between both terminals of the abovementioned power source to conduct shutter release,

a second switching means connected to the above mentioned wind-updriving means and placed in ON state by completion of said shutterrelease,

a third switching means connected to the above mentioned release drivingmeans and placed in ON state by completion of said wind-up, and

a change over means being placed between the above mentioned powersource and the wind-up driving means also the release driving means andchanged over by the action of the above mentioned electromagnetic relayand is connected to the above mentioned release driving means, whereinsaid change over means is changed over and connected to the wind-updriving means at the time when the above mentioned electro-magneticrelay is not in operatron.

2. The electrically driven control device for a camera claimed in claimI, which further comprises a fourth switching means between the abovementioned power source and the above mentioned wind-up driving means toconduct change over between one frame photographing and continuousphotographing.

3. The electrically driven control device for a camera claimed in claim2, in which the fourth switching means is controlled to ON or OFF in anassociation with the operation of the release button.

4. The electrically driven control device for a camera claimed in claim2, which further comprises a means to couple an auxiliary control devicein parallel with the first switching means.

5. The electrically driven control device for a camera claimed in claim2, which comprises a starting control means connected to the abovementioned wind-up driving means to control the starting of said drivingmeans.

6. The electrically driven control device for a camera claimed in claim2, which further comprises a control means to effect control of theabove mentioned release driving means in parallel with said releasedriving means.

7. The electrically driven control device for a camera claimed in claim2, in which the above mentioned power'source includes a power sourcevoltage control means to change the number of photographing framesphotographed per unit time during continuous photography.

8. The power source voltage control means for the electrically drivencontrol device for a camera claimed in claim 7, which further comprisesa variable resistance to determine the value of the power source voltagewhcrein said variable resistance is adjusted by operating the releasebutton.

9. The electrically driven control device for a camera claimed in claim1, in which the above mentioned power source has a timer circuit forchanging the speed of the driving means.

10. The timer circuit in the electrically driven control device for acamera claimed in claim 9, which further comprises a time constantcircuit consisting of a variable resistance and a condensor, saidvariable resistance being adjusted by operating the release button.

11. The electrically driven control device for a camera claimed in claim1, which further comprises a fifth switching means which becomes OFFwhile the shutter is in operation and is connected to the abovementioned wind-up driving means.

12. The electrically driven control device for a camera claimed in claim11, in which the fifth switching means has an input terminal of anexposure control means connected thereto.

13. The electrically driven control device for a camera claimed in claim2 which further comprises an up and down member in which a rotatingmember being coupled to a driving axle of the above mentioned windupdriving means is coupled with a rotating member at the film wind-upmechanism by a rotation absorbing mechanism, wherein a shutter releasemechanism is activated by the difference in rotation of said rotatingmembers by said rotation absorbing members.

UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION PATENT NO.3,898,679

DATED August 5,1975

|NVENTOR(5) I MITSU'I'OSHI OGISO,H. AIZAWA and S. KOZUKI It is certifiedthat error appears in the above-identified patent and that said LettersPatent are hereby corrected as shown below:

In the heading of the patent:

The filing date should read:

-- [22] Filed August 14,1973

Signed and Scaled this A ttest:

RUTH C. MASON C. MARSHALL DANN Arresting Officer Commissioner ofPalentxand Trademarks UNITED STATES PATENT OFFICE Q CERTIFICATE OF CORRECTIONPATENT NO. I 3,898,679

DATED August 5,1975

J INVENTOR( I MITSUTOSHI OGISO,H. AIZAWA and S. KOZUKI It is certifiedthat error appears in the aboveidentified patent and that said LettersPatent are hereby corrected as shown below:

In the heading of the patent:

The filing date should read:

22] Filed Aug l4Il973 Sugned and Scaled this [SEAL] seventh Day of 0mm1975 Attest:

RUTH. C. MASON C. MARSHALL DANN AIISIHIg Officer (mnmissr'oner oflarenlsand Trademarks

1. An electrically driven control device for a camera comprising; apower source, an electro-magnetic relay connected to both terminals ofsaid power source, a first switching means connected to saidelectromagnetic relay and controlled to ON or OFF by operating a releasebutton, a wind-up driving means connected between both terminals of theabove mentioned power source to conduct film wind-up and shuttercharging, a release driving means connected between both terminals ofthe above mentioned power source to conduct shutter release, a secondswitching means connected to the above mentioned windup driving meansand placed in ON state by completion of said shutter release, a thirdswitching means connected to the above mentioned release driving meansand placed in ON state by completion of said wind-up, and a change overmeans being placed between the above mentioned power source and thewind-up driving means also the release driving means and changed over bythe action of the above mentioned electro-magnetic relay and isconnected to the above mentioned release driving means, wherein saidchange over means is changed over and connected to the wind-up drivingmeans at the time when the above mentioned electro-magnetic relay is notin operation.
 2. The electrically driven control device for a cameraclaimed in claim 1, which further comprises a fourth switching meansbetween the above mentioned power source and the above mentioned wind-updriving means to conduct change over between one frame photographing andcontinuous photographing.
 3. The electrically driven control device fora camera claimed in claim 2, in which the fourth switching means iscontrolled to ON or OFF in an association with the operation of therelease button.
 4. The electrically driven control device for a cameraclaimed in claim 2, which further comprises a means to couple anauxiliary control device in parallel with the first switching means. 5.The electrically driven control device for a camera claimed in claim 2,which comprises a starting control means connected to the abovementioned wind-up driving means to control the starting of said drivingmeans.
 6. The electrically driven control device for a camera claimed inclaim 2, which further comprises a control means to effect control ofthe above mentioned release driving means in parallel with said releasedriving means.
 7. The electrically driven control device for a cameraclaimed in claim 2, in which the above mentioned power source includes apower source voltage control means to change the number of photographingframes photographed per unit time during continuous photography.
 8. Thepower source voltage control means for the electrically driven controldevice for a camera claimed in claim 7, which further comprises avariable resistance to determine the value of the power source voltagewherein said variable resistance is adjusted by operating the releasebutton.
 9. The electrically driven control device for a camera claimedin claim 1, in which the above mentioned power source has a timercircuit for changing the speed of the driving means.
 10. The timercircuit in the electrically driven control device for a camera claimedin claim 9, which further comprises a time constant circuit consistingof a variable resistance and a condensor, said variable resistance beingadjusted by operating the release button.
 11. The electrically drivencontrol device for a camera claimed in claim 1, which further comprisesa fifth switching means which becomes OFF while the shutter is inoperation and is connected to the above mentioned wind-up driving means.12. The electrically driven control device for a camera claimed in claim11, in which the fifth switching means has an input terminal of anexposure control means connected thereto.
 13. The electrically drivencontrol device for a camera claimed in claim 2 which further comprisesan up and down member in which a rotating member being coupled to adriving axle of the above mentioned wind-up driving means is coupledwith a rotating member at the film wind-up mechanism by a rotationabsorbing mechanism, wherein a shutter release mechanism is activated bythe difference in rotation of said rotating members by said rotationabsorbing members.